For wifi range extenders, they all have to have the same password as the router's, but can setup a different wifi name. If you want a extender with a different password, you may have powerline...

EU version has removed WISP mode.

It's 1.7W

What's the IP of your Huawei router? Is it 192.168.8.X? If so, it's better to change the IP of TL-WR702N to 192.168.8.254. Make sure the TL-WR702N is not too far way from the router, and the wireless...

Your Internet Access Time is incorrect, the Green boxes in Internet Access Time are the time that the rules take affect, it doesn't mean internet access, the Blank boxes mean no restriction at that...

Hi David, did you try reset it to factory settings? Also can try change the Wireless Channel to 1/6/11, Channel Width to 20Mhz for 2.4Ghz.